A variable-temperature study using selective inversion-recovery 29Si n.m.r. spectroscopy yielded the first definitive information on exchange between silicate anions, giving rate constants of the order of 0.5 kg mol–1 S–1 and a free energy of activation of 93 kJ mol–1for the dimerization of the orthosilicate anion in an alkaline solution of potassium silicate.
C. J. Creswell, R. K. Harris and P. T. Jageland, J. Chem. Soc., Chem. Commun., 1984, 1261 DOI: 10.1039/C39840001261
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